2024 Solo 401k Contribution Limits 2024. Starting in 2024, employees can contribute up to $23,000 into their 401 (k), 403 (b), most 457 plans or the thrift. See the limits for traditional 401(k)s, roth 401(k)s, employer contributions, and profit sharing.

The elective deferral contribution if you’re at least age 50 is. The 401 (k) contribution limit for 2023 is $22,500 for employee contributions and $66,000 for combined employee and employer contributions.